Abstract
Inkjet 3D printing has potential in the additive manufacturing of electronic circuits and devices.However,inks that can be used for printing layers with T5％＞300 ℃ or hardness＞200 MPa have been rarely reported.Cyanate ester(CE)polymers have excellent thermal stability,high strength,and low shrinkage compared to other common dielectric inks for inkjet 3D printing,but cannot be quickly shaped by ultraviolet(UV)irradiation or thermal treatment.Combining CEs with UV-curable monomers may be a possible way to accelerate crosslinking,but there are challenges from the adverse effects of the dilution of both monomers.In this study,dielectric inks with acrylate and cyanate moieties were devel-oped.The low viscosity and surface tension of the CE precursor(Bisphenol E cyanate ester)were combined with photocurable acrylate diluent monomers and cross-linker to realize an ink suitable for inkjet 3D printing.An internal dual three-dimensional cross-linked network structure resin was prepared by a combination of photocuring and thermal curing with T5％up to 326.69 ℃,hardness up to 431.84 MPa,dielectric constant of 2.70 at 8 GHz,and shrinkage of 1.64％.The developed dielectric inks can be applied to the 3D printing of printed circuit boards and other elec-tronic devices that require dielectric properties.
基金项目
国家重点研发计划(2022YFB4600101)
中国科学院战略规划重点项目(XDB 0470303)
国家自然科学基金(21974057)
Western Light Project of Chinese Academy of Sciences(xbzgzdsy-202007)
Oasis Scholar of Shihezi University()
Central Government to Guide Local Technological Development(23ZYQA315)
维普
万方数据